731724483145 has 4 divisors (see below), whose sum is σ = 878069379780. Its totient is φ = 585379586512.

The previous prime is 731724483143. The next prime is 731724483211. The reversal of 731724483145 is 541384427137.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87369901056 + 644354582089 = 295584^2 + 802717^2 .

It is a cyclic number.

It is not a de Polignac number, because 731724483145 - 2¹ = 731724483143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (731724483143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73172448310 + ... + 73172448319.

It is an arithmetic number, because the mean of its divisors is an integer number (219517344945).

Almost surely, 2^731724483145 is an apocalyptic number.

It is an amenable number.

731724483145 is a deficient number, since it is larger than the sum of its proper divisors (146344896635).

731724483145 is a wasteful number, since it uses less digits than its factorization.

731724483145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146344896634.

The product of its digits is 2257920, while the sum is 49.

The spelling of 731724483145 in words is "seven hundred thirty-one billion, seven hundred twenty-four million, four hundred eighty-three thousand, one hundred forty-five".